Lock-switch.



W. PRICE & H. E. SHERIDAN.

LOOK SWITCH. APPLICATION FILED VAUG. a, 1912.

1,077,554, Patented Nov. 4, 1913.

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W'ILLIAM PRICE AND HARRY E. SHERIDAN, 0F SCRANTON, PENNSYLVANIA.

LOCK-SWITCH.

Specification of Letters Patent.

Application filed August 8, 1912. Serial No. 714,105.

To (ZZZ whom it may concern.

HARRY E. SHERIDAN, citizens of the United States, residing at 2232 Brown avenue Scranton, 1n the county of'Lackawanna and State of Pennsylvania, have invented certain new and useful Improvements in Look- Switches, of which the following is a specification reference being had therein to the accompanying drawing.

This invention relates to switch operating mechanism and has for its object the production of an efiicient means whereby the switch may be thrown by the attendant of the car without compelling him to leave his position upon the car.

Another object of the invention is the production of an efiicient means for throwing the switch point when so desired and for looking it in such position.

With these and other objects in view this invention consists in certain novel combinations, constructions, and arrangement of parts as will be hereinafter fully described and claimed.

In the accompanying drawings :F igure 1 is a top plan view of the switch operating mechanism showing the cover plate partly broken away. Fig. 2 is a central longitudinal section of the operating mechanism. Fig. 3 is an enlarged fragmentary view of a portion of the switch operating mechanism. Fig. 4; is a perspective view of the rotative star and cam.

Referring to the accompanying drawings by numerals it will be seen that this device consists of a box 1 which is provided with the top cover 2 and the opening 3. A secondary box portion 1 is positioned within the box 1 and forms a closure for the opening 3. lVithin the opening 3 is positioned a star rotative member 5 which is provided with a plurality of arms 6. A shaft 7 is carried by the rotative member 5 and carries upon its lower end the cam member 8, said rotative member 5 being positioned within the opening 3 and the cam 8 being positioned within the box 1. A switch throwing arm 9 is pivotally mounted upon the support 10, and is connected to the switch point 12 by means of the connecting link 13, said connectingv link 13 provided with a tension spring 14 which furnishes a resilient con nection between the bar 9 and the switch point. The opposite end of the switch throwing arm 9 is provided with the notched V 2 portion 15. The operating member'carried Be it known that we, WILLIAM PRICE and by the car is guided within the opening 3 by means of the slot 16 and will engage one of the arms 6 and will in this manner rotate the rotative member 5. The cam positioned Patented Nov. 4., 1913.

below the rotative member will in turn be I I rotated, and will bear upon the switch throwing arm 9 and will in turn throw the switch point when so desired.

Itwill be seen that by having the switch throwing arm 9 provided with the notched portion15 the cam will rest within this portion and will lock the switch point in an opened position. Whereas if the switch throwing arm was provided with an even face the cam would very likely slip beyond a desired point and the switch would again close.

A guiding pin 17 is carried by the side wall of the box 1 and passes through the aperture 18 formed in the switch throwing arm. By use of this guiding pin 17, any lateral movement of the switch throwing arm is prevented whereby the arm is always held in its correct position so that it will be easily engaged by the cam member. A secondary spring 19 is carried by the pin 17 and acts to normally close the switch. The cover 2 of the box 1 is provided with the inclined track portion 20 for allowing the operating member carried by the car to easily pass out of the box.

The car is provided with a bracket member which consists of a pair of converging arms 21 which are provided with the eyelet 22. These arms 21 are provided with the laterally extending feet 23 whereby said bracket may be easily connected to. the car. One of the feet 23 extends to form a secondary eyelet 24 and terminates in an upwardly extending finger 25. A switch operating foot 26 which is pivoted within the eyelet 22 is carried by the car and is adapted to engage the switch operating mechanism. A tension spring 27 is carried by the eyelet 24 and is connected to the end portion 28 of the switch operating foot 26. It will be seen that by use of this spring the switch operating foot 26 is held in such a position as to normally engage the switch operating mechanism, but in order to hold the foot 26 out of engagement with said mechanism a chain 29 is connected to said foot 26 at one end and to the operating lever 30 at the other end thereof. When it is desired to lift the switch operating foot 26 from engagement with the switch operating mechanism, the operating lever 30 which is positioned within the guiding member '31 is shifted'to" one side and in this manner the chain 29 which passes over. the pulley 32 will lift the foot up under the A switch operating mechanism of the class described comprising a supporting member, a rotative member provided with a plurality of laterally extending arms, a cam carried by said rotative member, a switch throwing arm pivotally mounted upon said supporting member and means connecting said switch throwing arm to the switch point, said switch throwing arm provided with a transverse extending aperture, a'pin carried by said support and passing through said aperture to prevent said arm fromwa'bbling amass i ate notched portion, said rotating member adapt'e'd'to be moved one quarter of a revolution, said cam adapted to engage, said notched portion whereby said ro-tative member and said cam will be prevented from 'moving' more than one quarter of a revolutionat a time, since a portion of the cam will restin said notched portion whereby the switch will be held in an open or closed position as desired and said pin preventingsaid arm'cfrom wabbling whereby the same i would, become disengaged with said cam ,In' testimony whereof we hereunto afiix our signatures in presence of two witnesses.

WILLIAM PRICE.

HARRY E. SHERIDAN;

Witnesses:

CHAS. H. Fooenrr,

DELBERTYE. WADEMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents; Washington, D. C. 

